Does this expression make sense.

  • Context: Graduate 
  • Thread starter Thread starter Klaus_Hoffmann
  • Start date Start date
  • Tags Tags
    Expression
Click For Summary
SUMMARY

The discussion centers on the convergence of the Cesàro sum expression as lambda approaches infinity. Specifically, the expression S(λ, δ) = ∑_{n ≤ λ} (1 - n/λ)^{δ} μ(n) is analyzed for its behavior under large lambda values. It is established that for finite lambda, S is finite, but the convergence as lambda increases is questioned. The conclusion suggests that S ∼ A + O(λ^{-b}) holds true, where b is a positive real number.

PREREQUISITES
  • Understanding of Cesàro summation
  • Familiarity with asymptotic notation
  • Knowledge of mathematical series and convergence
  • Basic concepts of number theory, particularly related to functions like μ(n) and Λ(n)
NEXT STEPS
  • Research the properties of Cesàro sums in number theory
  • Study asymptotic analysis techniques in mathematical proofs
  • Explore convergence criteria for infinite series
  • Investigate the behavior of specific arithmetic functions like μ(n) and Λ(n)
USEFUL FOR

Mathematicians, researchers in number theory, and students studying advanced calculus or series convergence will benefit from this discussion.

Klaus_Hoffmann
Messages
85
Reaction score
1
i don't know where i saw the question is does this expression (Cesaro sum ??) make sense for big lambda and positive delta

[tex]\sum_{n \le \lambda } (1- \frac{n}{\lambda})^{\delta} \mu (n)=S( \lambda , \delta)[/tex]

for finite lambda the S is finite the question is what would happen as lambda goes to infinity ?, does the sum converge in the sense that for lambda big.

[tex]S \sim A+ O( \lambda ^{-b}[/tex] (b a positive real number)

and the same for

[tex]\sum_{n \le \lambda } (1- \frac{n}{\lambda})^{\delta} \Lambda (n)=S( \lambda , \delta)[/tex]
 
Physics news on Phys.org
What have you tried to prove, or disprove, and how have you attempted to do it?
 

Similar threads

  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 3 ·
Replies
3
Views
4K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 10 ·
Replies
10
Views
3K
Replies
2
Views
6K
  • · Replies 2 ·
Replies
2
Views
3K